JP6034014B2 - Wireless power transmission method for preventing frequency interference - Google Patents

Wireless power transmission method for preventing frequency interference Download PDF

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JP6034014B2
JP6034014B2 JP2011250659A JP2011250659A JP6034014B2 JP 6034014 B2 JP6034014 B2 JP 6034014B2 JP 2011250659 A JP2011250659 A JP 2011250659A JP 2011250659 A JP2011250659 A JP 2011250659A JP 6034014 B2 JP6034014 B2 JP 6034014B2
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power transmission
frequency
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vehicle
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JP2012235674A (en
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ホ，ナムウン
キム，シング
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Hyundai Motor Co
Kia Corp
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B5/00—Near-field transmission systems, e.g. inductive or capacitive transmission systems
    • H04B5/70—Near-field transmission systems, e.g. inductive or capacitive transmission systems specially adapted for specific purposes
    • H04B5/79—Near-field transmission systems, e.g. inductive or capacitive transmission systems specially adapted for specific purposes for data transfer in combination with power transfer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
    • B60L53/10—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles characterised by the energy transfer between the charging station and the vehicle
    • B60L53/12—Inductive energy transfer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R25/00—Fittings or systems for preventing or indicating unauthorised use or theft of vehicles
    • B60R25/40—Features of the power supply for the anti-theft system, e.g. anti-theft batteries, back-up power supply or means to save battery power
    • B60R25/406—Power supply in the remote key
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
    • H02J50/10—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
    • H02J50/20—Circuit arrangements or systems for wireless supply or distribution of electric power using microwaves or radio frequency waves
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
    • H02J50/40—Circuit arrangements or systems for wireless supply or distribution of electric power using two or more transmitting or receiving devices
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
    • H02J50/70—Circuit arrangements or systems for wireless supply or distribution of electric power involving the reduction of electric, magnetic or electromagnetic leakage fields
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/18—TPC being performed according to specific parameters
    • H04W52/24—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters
    • H04W52/243—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters taking into account interferences
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2270/00—Problem solutions or means not otherwise provided for
    • B60L2270/10—Emission reduction
    • B60L2270/14—Emission reduction of noise
    • B60L2270/147—Emission reduction of noise electro magnetic [EMI]
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
    • H02J50/80—Circuit arrangements or systems for wireless supply or distribution of electric power involving the exchange of data, concerning supply or distribution of electric power, between transmitting devices and receiving devices
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/10—Technologies relating to charging of electric vehicles
    • Y02T90/12—Electric charging stations
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/10—Technologies relating to charging of electric vehicles
    • Y02T90/14—Plug-in electric vehicles

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Power Engineering (AREA)
  • Signal Processing (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Transportation (AREA)
  • Mobile Radio Communication Systems (AREA)
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Description

本発明は、周波数干渉を防止する無線電力伝送方法に関し、より詳しくは、無線電力伝送機と無線電力伝送機からの電力信号の周波数帯域に隣接した周波数を使用する他機器間における信号干渉および衝突を回避する周波数干渉を防止する無線電力伝送方法に関する。   The present invention relates to a wireless power transmission method for preventing frequency interference, and more particularly, signal interference and collision between a wireless power transmitter and another device using a frequency adjacent to a frequency band of a power signal from the wireless power transmitter. The present invention relates to a wireless power transmission method for preventing frequency interference that avoids noise.

一般的に、誘導起電力方式を利用して互いに離れた装置間に電力を伝送するための技術として無線電力伝送システムが用いられている。このような無線電力伝送システムは、特定範囲の周波数（一般的に、１００〜２１０Ｋｈｚの周波数）を利用して、離れた位置にある装置間の電力伝送を可能にするが、無線信号を利用して電力を伝送しているため、電力を伝送するための信号が使用する周波数帯域に隣接した周波数を使用する他機器が近くにあると、周波数干渉を起して誤作動となる可能性があった。   Generally, a wireless power transmission system is used as a technique for transmitting power between devices separated from each other using an induced electromotive force system. Such a wireless power transmission system uses a specific range of frequencies (generally, a frequency of 100 to 210 Khz) to enable power transmission between devices at remote locations, but uses a wireless signal. Therefore, if there is a nearby device that uses a frequency adjacent to the frequency band used by the signal for transmitting power, it may cause frequency interference and malfunction. It was.

そこで、このような周波数干渉および衝突を回避するために、一般的にマルチチャネル技術が用いられている。しかし、無線電力伝送の分野においては、現実的に使用できる周波数帯域が非常に限定されている実情である。よって、無線で電力を伝送するために周波数を多様に変更して使用するのに限界があるという短所を有している。また、周波数を変更すると、使用周波数の変更に応じて電力伝送効率が必然的に変化し、その変化幅が非常に大きいので現実的に適用が難しいという問題もあった。   Therefore, in order to avoid such frequency interference and collision, a multi-channel technique is generally used. However, in the field of wireless power transmission, the actual usable frequency band is very limited. Therefore, there is a disadvantage in that there is a limit to using various frequencies in order to transmit power wirelessly. Further, when the frequency is changed, the power transmission efficiency is inevitably changed according to the change of the use frequency, and the change width is very large, so that there is a problem that it is practically difficult to apply.

また、別の方法として、相異なる装置間における周波数干渉を防止するために、電磁波の影響が及ぶ物理的な領域を減らすべく電磁気遮蔽をする方法が用いられている。しかし、このような方法は、電磁気遮蔽構造を適用させるために遮蔽手段をさらに設置しなければならないので追加費用が発生するという短所があり、無線電力伝送構造を設計変更するといった場合には、無線電力伝送機の設計変更時ごとに放射パターンを再測定し、変更前に適用された遮蔽構造を再設計しなければならないという短所がある。したがって、このような電磁気遮蔽を利用する方法は開発するのに煩わしく、開発に多くの時間が必要となるという短所がある。   As another method, in order to prevent frequency interference between different devices, a method of electromagnetic shielding is used in order to reduce a physical region affected by electromagnetic waves. However, such a method has a disadvantage in that additional cost is generated because a shielding means must be further installed in order to apply the electromagnetic shielding structure. There is a disadvantage in that it is necessary to re-measure the radiation pattern every time the design of the power transmitter is changed, and to redesign the shielding structure applied before the change. Therefore, a method using such an electromagnetic shield is troublesome to develop, and has a disadvantage that much time is required for development.

このような周波数干渉に関して、例えば、複数の送電装置が存在する場合においても、他の送電装置からの干渉を受けずに１つの受電装置に対して１つの送電装置から電力を伝送することが可能な送電装置、送電方法、プログラム、受電装置、および電力伝送システム〔特許文献１〕、受電設備の受信アンテナ群の開口面積が大きい場合に、受電設備の受信アンテナ群上に干渉縞が生じないようにすることができ、かつマイクロ波電力を受信アンテナ群で効率良く受信できる無線電力伝送装置〔特許文献２〕の提案がある。   Regarding such frequency interference, for example, even when there are a plurality of power transmission devices, it is possible to transmit power from one power transmission device to one power reception device without receiving interference from other power transmission devices. Power transmission device, power transmission method, program, power reception device, and power transmission system [Patent Document 1], when the opening area of the reception antenna group of the power reception facility is large, interference fringes do not occur on the reception antenna group of the power reception facility And a wireless power transmission device [Patent Document 2] that can efficiently receive microwave power with a group of receiving antennas.

特開２００９−２７８７０７号公報JP 2009-278707 A 特開２００６−０３４０４４号公報JP 2006-034044 A

上記問題点を解決すべくなされた本発明の目的は、電力を無線で伝送するための無線電力伝送機と、無線電力伝送機と近接して配置され、無線電力伝送機が使用する周波数と隣接した周波数を使用する複数の隣接周波数使用機器との周波数干渉が防止できる無線電力伝送方法を提供することである。   An object of the present invention, which has been made to solve the above-described problems, is a wireless power transmitter for transmitting power wirelessly, and a frequency that is disposed close to the wireless power transmitter and adjacent to the frequency used by the wireless power transmitter. It is an object of the present invention to provide a wireless power transmission method capable of preventing frequency interference with a plurality of adjacent frequency using devices that use the selected frequency.

また、本発明は、車両に設けられた無線充電器を包括する無線電力伝送機と隣接周波数使用機器を含んで構成され無線周波数干渉を防止するための無線電力伝送方法であって、
車両に設けられた無線充電器により低周波の電力信号を発生するステップと、
車両に設けられた無線充電器により車両に設けられた無線充電器が稼働状態で第１アンテナを通じて電力信号を伝送するステップと。
隣接周波数使用機器により、車両に設けられた無線充電器を一時的に停止するよう電力伝送制御信号を発生させるステップと、
隣接周波数使用機器により、電力伝送制限信号を伝送するステップと、
隣接周波数使用機器により、車両に設けられた無線充電器が一時的に停止している状態で第２アンテナを通じて低周波信号をサーチするステップと、
を含み、
前記隣接周波数使用機器が、スマートキーユニットを含み、
スマートキーユニットのＬＦ信号のサーチ作業が終了すると、スマートキーユニットは、車両に設けられた無線充電器への電力伝送制限信号を中止し、車両に設けられた無線充電器が再び作動するようにすることを特徴とする。 Further, the present invention is a wireless power transmission method for preventing radio frequency interference, comprising a wireless power transmitter including a wireless charger provided in a vehicle and an adjacent frequency using device,
Generating a low-frequency power signal by a wireless charger provided in the vehicle ;
A step of wirelessly charger provided in the vehicle by wireless charger provided in the vehicle to transmit a power signal through a first antenna in a working state.
A step of generating a power transmission control signal to temporarily stop a wireless charger provided in the vehicle by an adjacent frequency using device;
A step of transmitting a power transmission restriction signal by an adjacent frequency using device;
Searching for a low-frequency signal through the second antenna in a state where a wireless charger provided in the vehicle is temporarily stopped by an adjacent frequency using device;
Including
The adjacent frequency using device includes a smart key unit,
When the search operation of the LF signal of the smart key unit is completed, the smart key unit stops the power transmission restriction signal to the wireless charger provided in the vehicle, and the wireless charger provided in the vehicle is activated again. characterized in that it.

前記無線電力伝送方法は、
低周波信号のサーチが停止している場合に、
車両に設けられた無線充電器を再度作動させるための隣接周波数使用機器による電力伝送制限信号の車両に設けられた無線充電器への伝送中止を、さらに含むことを特徴とする。 The wireless power transmission method includes:
When the search for the low frequency signal is stopped,
The method further includes stopping transmission of the power transmission restriction signal to the wireless charger provided in the vehicle by the adjacent frequency using device for reactivating the wireless charger provided in the vehicle .

前記電力伝送制限信号の車両に設けられた無線充電器への伝送は、
隣接周波数使用機器が作動している間の隣接周波数使用機器による電力伝送制限信号の一貫した伝送を含み、
これにより隣接周波数使用機器が作動し、車両に設けられた無線充電器の作動が停止することを特徴とする。 Transmission of the power transmission restriction signal to the wireless charger provided in the vehicle ,
Including the consistent transmission of the power transmission limit signal by the adjacent frequency equipment while the adjacent frequency equipment is in operation,
As a result, the adjacent frequency using device is activated, and the operation of the wireless charger provided in the vehicle is stopped.

前記電力伝送制限信号の車両に設けられた無線充電器への伝送は、
電力伝送制限信号を伝送した後の予め設定された時間の後に隣接周波数使用機器が作動することを特徴とする。
Transmission of the power transmission restriction signal to the wireless charger provided in the vehicle ,
The apparatus using the adjacent frequency operates after a preset time after transmitting the power transmission restriction signal.

前記のような構成でなる本発明は、無線電力伝送機の入力端子連結とソフトウェアの修正、隣接した周波数使用機器の出力端子連結とソフトウェア修正だけで周波数の干渉および衝突を防止できる効果がある。
また、周波数の干渉および衝突を防止するために、従来の無線電力伝送機の構成のまま、さらに追加することないので、追加の費用が発生しないという利点がある。 The present invention configured as described above has an effect of preventing frequency interference and collision only by connecting the input terminal of the wireless power transmitter and correcting the software, and connecting the output terminal of the adjacent frequency using device and correcting the software.
In addition, in order to prevent frequency interference and collision, there is an advantage that no additional cost is generated since no further addition is made in the configuration of the conventional wireless power transmitter.

本発明の好ましい実施形態による周波数干渉を防止する無線電力伝送方法を実行するシステムを示すブロック図である。1 is a block diagram illustrating a system for performing a wireless power transmission method for preventing frequency interference according to a preferred embodiment of the present invention. 本発明の好ましい実施形態による周波数干渉を防止する無線電力伝送方法を示すフローチャートである。3 is a flowchart illustrating a wireless power transmission method for preventing frequency interference according to a preferred embodiment of the present invention. 本発明の一実施形態による周波数干渉を防止する無線電力伝送方法を示すブロック図である。1 is a block diagram illustrating a wireless power transmission method for preventing frequency interference according to an embodiment of the present invention.

以下、図面を参照して本発明の好ましい実施形態をより詳細に説明する。
図１は、本発明の好ましい実施形態による周波数干渉を防止する無線電力伝送方法を実行するシステムを示すブロック図である。図示したように、本発明の周波数干渉を防止する無線電力伝送方法を実行するシステムは、無線電力伝送技術を利用して無線で電力信号を生成および伝送する無線電力伝送機１０と、無線電力伝送機１０と隣接して配置され、無線電力伝送機１０からの電力信号を受信して動作する１つ以上の隣接周波数使用機器２０が配置されてなっている。図１には、隣接周波数使用機器として第１隣接周波数使用機器２１と第２隣接周波数使用機器２２を示しているが、本発明はこれに限定されず、その他、無線電力伝送機１０からの電力信号を受信して電力の供給を受ける種々の電子装置を備えることができる。また、図１の第１隣接周波数使用機器２１と第２隣接周波数使用機器２２は、図示したように、単に送受信アンテナ（第１アンテナと第２アンテナの違い）の違いがあるだけであって、電力の供給を受けるメカニズムは同じである。したがって、１つ以上の隣接周波数使用機器は、以下、「隣接周波数使用機器２０」と記載する。 Hereinafter, preferred embodiments of the present invention will be described in more detail with reference to the drawings.
FIG. 1 is a block diagram illustrating a system for performing a wireless power transmission method for preventing frequency interference according to a preferred embodiment of the present invention. As shown in the figure, a system for executing a wireless power transmission method for preventing frequency interference according to the present invention includes a wireless power transmitter 10 that wirelessly generates and transmits a power signal using wireless power transmission technology, and a wireless power transmission. One or more adjacent frequency using devices 20 that are disposed adjacent to the device 10 and operate by receiving a power signal from the wireless power transmitter 10 are disposed. Although FIG. 1 shows the first adjacent frequency using device 21 and the second adjacent frequency using device 22 as the adjacent frequency using devices, the present invention is not limited to this, and other power from the wireless power transmitter 10 is also shown. Various electronic devices that receive signals and receive power can be provided. In addition, the first adjacent frequency using device 21 and the second adjacent frequency using device 22 in FIG. 1 are merely different in transmission / reception antennas (difference between the first antenna and the second antenna) as shown in the figure, The mechanism for receiving power is the same. Accordingly, one or more adjacent frequency using devices are hereinafter referred to as “adjacent frequency using devices 20”.

一方、前記した「無線電力伝送技術」は、無線で電力を伝送するために用いられる技術であり、特定周波数帯域（例えば、１００ｋＨｚ〜２１０ｋＨｚの間の周波数）の電力信号を利用して無線で電力を伝送する公知の技術をいう。この無線電力伝送技術は、特定周波数帯域に含まれる電力信号を生成して送信端を介して伝送する無線電力伝送機と、無線電力伝送機から電力の供給を受ける１つ以上の装置の受信端を介して電力信号を受信し、電力信号の誘導起電力を利用して信号を電力に転換して供給を受ける技術である。
本発明は、前記のような無線電力伝送技術を利用する。
図示したように、本発明の周波数干渉を防止する無線電力伝送方法を適用するシステムには、電力を伝送する無線電力伝送機１０が備えられる。無線電力伝送機１０は、基本的に公知の無線電力伝送機１０の構成でなっており、より詳しくは、作動を制御する制御部、電源を供給する電源供給部、供給された電力を電力信号に変換する電力信号変換部、隣接周波数使用機器に電力信号を送る送信アンテナ、および共振コンバータを備えることができる。このような無線電力伝送機１０の構成は公知であるので、ここでは詳しい説明を省略する。 On the other hand, the above-described “wireless power transmission technology” is a technology used to transmit power wirelessly, and wirelessly uses a power signal in a specific frequency band (for example, a frequency between 100 kHz to 210 kHz). This is a known technique for transmitting. The wireless power transmission technology includes a wireless power transmitter that generates a power signal included in a specific frequency band and transmits the generated power signal via a transmitting end, and a receiving end of one or more devices that are supplied with power from the wireless power transmitting device. In this technique, a power signal is received via a signal, and the signal is converted into electric power by using an induced electromotive force of the power signal.
The present invention uses the wireless power transmission technology as described above.
As shown in the drawing, a system to which a wireless power transmission method for preventing frequency interference according to the present invention is applied includes a wireless power transmitter 10 that transmits power. The wireless power transmitter 10 basically has the configuration of a known wireless power transmitter 10. More specifically, the wireless power transmitter 10 has a control unit for controlling operation, a power supply unit for supplying power, and a power signal for supplying power. A power signal conversion unit that converts the power signal into a transmitter, a transmission antenna that transmits a power signal to an adjacent frequency device, and a resonance converter. Since the configuration of such a wireless power transmitter 10 is known, detailed description is omitted here.

本発明の無線電力伝送機１０は、後述する隣接周波数使用機器２０の使用時には、電力信号の出力を中断して周波数の干渉および衝突が生じないようにする。よって、本発明の無線電力伝送機１０は、外部から信号（電力伝送制限信号）が入力されたとき、これを受信し、該当信号が入力される間、無線電力伝送を中断するようにする。このために、本発明の無線電力伝送機１０は、前記のような従来の無線電力伝送機１０の一般的な構成に加え、電力伝送制限信号を受信できる信号受信端３０（信号受信端３０は、電力信号を送るために備えられたアンテナを利用することができる。）をさらに含むことができ、信号受信端３０を介して受信した電力伝送制限信号を制御部に送ることによって、無線電力伝送機１０の作動が制御される。従って、無線電力伝送機１０の制御部は、信号受信端３０から電力伝送制限信号を受信したとき、無線電力伝送機１０の作動を中断するように制御する。   The wireless power transmitter 10 according to the present invention interrupts output of a power signal to prevent frequency interference and collision when using an adjacent frequency using device 20 described later. Therefore, when a signal (power transmission restriction signal) is input from the outside, the wireless power transmitter 10 according to the present invention receives the signal and interrupts the wireless power transmission while the signal is input. For this purpose, the wireless power transmitter 10 according to the present invention has a signal receiving end 30 (the signal receiving end 30 can receive the power transmission restriction signal) in addition to the general configuration of the conventional wireless power transmitter 10 as described above. , An antenna equipped to transmit a power signal can be used.) And wireless power transmission can be performed by sending a power transmission limiting signal received via the signal receiving end 30 to the control unit. The operation of the machine 10 is controlled. Therefore, when the control unit of the wireless power transmitter 10 receives the power transmission restriction signal from the signal receiving end 30, the control unit controls the operation of the wireless power transmitter 10 to be interrupted.

隣接周波数使用機器２０は、無線電力伝送技術を使用し、無線電力伝送機１０を介して伝送された電力信号を利用して電力の提供を受けて作動する装置である。言い換えれば、隣接周波数使用機器２０は、無線電力伝送機１０から無線信号として出力された電力信号を受信し、受信した電力信号を誘導起電力によって電力に転換して電力の提供を受ける装置である。隣接周波数使用機器２０は、電力を使用し作動する如何なる装置またはモジュールであってもよく、この時、無線電力伝送機１０からの信号を受けて電力に転換する無線電力伝送技術を使用するメカニズムを除いては、公知の電子装置と同じ構成であってよい。
また、隣接周波数使用機器２０は、送信アンテナを備え、無線信号（隣接周波数使用機器の本来の機能を遂行するために無線でやりとりする信号）を出力する機器である。また、隣接周波数使用機器２０は、無線電力伝送機１０が使用する特定範囲の周波数帯域と隣接した周波数帯域を使用する。
さらに、隣接周波数使用機器２０は、信号の送受信時に、無線電力伝送機１０から出力された電力信号と干渉および衝突を起こすことがあるので、本発明の隣接周波数使用機器２０は、無線電力伝送機１０の信号出力を制限する電力伝送制限信号を生成し、これを出力する。 The adjacent frequency using device 20 is a device that operates by receiving power supply using a power signal transmitted through the wireless power transmitter 10 using a wireless power transmission technology. In other words, the adjacent frequency using device 20 is a device that receives a power signal output as a radio signal from the wireless power transmitter 10, converts the received power signal into power by induced electromotive force, and receives power. . The adjacent frequency using device 20 may be any device or module that operates using electric power, and at this time, a mechanism using a wireless power transmission technology that receives a signal from the wireless power transmission device 10 and converts it into electric power. Except for this, the configuration may be the same as that of a known electronic device.
The adjacent frequency using device 20 is a device that includes a transmission antenna and outputs a radio signal (a signal exchanged wirelessly to perform the original function of the adjacent frequency using device). The adjacent frequency using device 20 uses a frequency band adjacent to a specific range of frequency bands used by the wireless power transmitter 10.
Furthermore, since the adjacent frequency using device 20 may cause interference and collision with the power signal output from the wireless power transmitter 10 during signal transmission / reception , the adjacent frequency using device 20 of the present invention is configured with the wireless power transmitter. A power transmission limiting signal that limits the signal output of 10 is generated and output.

隣接周波数使用機器２０で生成された電力伝送制限信号は、隣接周波数使用機器２０に備えられた信号送信端４０を介して出力され、無線電力伝送機１０の信号受信端３０は、この電力伝送制限信号を受信して制御部に送る。この時、信号送信端４０と信号受信端３０は、隣接周波数使用機器２０の無線信号を送信するアンテナでもよく、無線信号を送信するアンテナとは別途に備えたものであってもよい。   The power transmission restriction signal generated by the adjacent frequency using device 20 is output via the signal transmitting end 40 provided in the adjacent frequency using device 20, and the signal receiving end 30 of the wireless power transmitter 10 receives the power transmission restriction signal. Receive the signal and send it to the controller. At this time, the signal transmitting end 40 and the signal receiving end 30 may be antennas that transmit radio signals of the adjacent frequency using device 20, or may be provided separately from antennas that transmit radio signals.

本発明の好ましい実施形態において、信号送信端４０と信号受信端３０は、無線通信を通じて信号をやりとりすることもでき、本発明の他の実施形態においては、信号送信端４０と信号受信端３０は有線通信で連結することもできる。   In a preferred embodiment of the present invention, the signal transmitting end 40 and the signal receiving end 30 can exchange signals through wireless communication. In another embodiment of the present invention, the signal transmitting end 40 and the signal receiving end 30 are It can also be connected by wired communication.

言い換えれば、本発明の無線電力伝送機１０と隣接周波数使用機器２０は互いに同時に作動しない。無線電力伝送機１０の作動中に隣接周波数使用機器２０のいずれかが作動を始めようとする時には、その隣接周波数使用機器２０から電力伝送制限信号を無線電力伝送機１０に出力し、電力伝送制限信号を受信した無線電力伝送機１０は作動を一時的に中止するようになる。この時、隣接周波数使用機器２０は、作動中、電力伝送制限信号を持続的に出力するのが好ましく、よって、隣接周波数使用機器が作動している間は無線電力伝送機１０が作動しないように制御される。   In other words, the wireless power transmitter 10 and the adjacent frequency using device 20 of the present invention do not operate simultaneously. When any of the adjacent frequency using devices 20 is about to start operation while the wireless power transmitter 10 is operating, the adjacent frequency using device 20 outputs a power transmission restriction signal to the wireless power transmitter 10 to restrict power transmission. The wireless power transmitter 10 that has received the signal temporarily stops its operation. At this time, it is preferable that the adjacent frequency using device 20 continuously outputs the power transmission restriction signal during operation. Therefore, the wireless power transmitter 10 is not operated while the adjacent frequency using device is operating. Be controlled.

一方、隣接周波数使用機器２０は、電力伝送制限信号を出力した後、予め設定された時間以後に作動を始めるようにすることにより、周波数の干渉および衝突を未然に防止することができるようになり好ましい。   On the other hand, the adjacent frequency using device 20 can prevent frequency interference and collision by starting operation after a preset time after outputting the power transmission restriction signal. preferable.

図２は、本発明の好ましい実施形態による周波数干渉を防止する無線電力伝送方法を示すフローチャートである。図２に示した隣接周波数使用機器２０は、説明の便宜上、１つのブロックで示したが、２つ以上の複数の機器に対応することもできる。   FIG. 2 is a flowchart illustrating a wireless power transmission method for preventing frequency interference according to a preferred embodiment of the present invention. The adjacent frequency using device 20 shown in FIG. 2 is shown as one block for convenience of explanation, but may correspond to two or more devices.

本発明の無線電力伝送機１０が作動を開始すると（Ｓ００１）、無線電力伝送機１０は、電源部から電力の印加を受けて電力信号を生成し、送信端を介して電力信号を出力する（Ｓ００２）。無線電力伝送機１０から出力された電力信号は隣接周波数使用機器２０に伝達される。   When the wireless power transmitter 10 of the present invention starts operating (S001), the wireless power transmitter 10 receives power from the power supply unit to generate a power signal, and outputs the power signal via the transmission end ( S002). The power signal output from the wireless power transmitter 10 is transmitted to the adjacent frequency using device 20.

一方、隣接周波数使用機器２０は、無線電力伝送機１０からの電力信号を受信して誘導起電力によって電力の印加を受け、自体に備えた電力貯蔵手段を介して電力を貯蔵するかまたは作動するようになる。   On the other hand, the adjacent frequency using device 20 receives a power signal from the wireless power transmitter 10, receives power from the induced electromotive force, and stores or operates power via a power storage means provided for itself. It becomes like this.

隣接周波数使用機器２０が作動開始準備状態となると（Ｓ００３）（ユーザから作動の開始のために操作されるか、他装置または制御部によって作動が始まるように制御された状態）、隣接周波数使用機器２０は、作動を開始する前に電力伝送制限信号を生成し、これを信号送信端４０を介して無線電力伝送機１０に出力する（Ｓ００４）。本発明の好ましい実施形態においては、隣接周波数使用機器２０が作動している間持続的に電力伝送制限信号を出力する。   When the adjacent frequency using device 20 is ready for operation start (S003) (operated for the start of operation by the user or controlled to start operation by another device or control unit), the adjacent frequency using device is used. 20 generates a power transmission restriction signal before starting the operation, and outputs it to the wireless power transmitter 10 via the signal transmission terminal 40 (S004). In a preferred embodiment of the present invention, the power transmission limit signal is continuously output while the adjacent frequency using device 20 is operating.

無線電力伝送機１０は、隣接周波数使用機器２０からの電力伝送制限信号を信号受信端３０から受信したとき、この信号を制御部に送り、制御部は、電力伝送制限信号を受信することによって、直ちに作動を中断するように制御する（Ｓ００５）。また、無線電力伝送機１０は、隣接周波数使用機器２０からの電力伝送制限信号に応じ、電力伝送制限信号を受信している間、持続的に作動を中止するように制御されるのが好ましい。   When the wireless power transmitter 10 receives the power transmission limit signal from the adjacent frequency using device 20 from the signal receiving end 30, the wireless power transmitter 10 sends this signal to the control unit, and the control unit receives the power transmission limit signal by Control is performed so that the operation is immediately interrupted (S005). Moreover, it is preferable that the wireless power transmitter 10 is controlled so as to continuously stop the operation while receiving the power transmission restriction signal according to the power transmission restriction signal from the adjacent frequency using device 20.

一方、隣接周波数使用機器２０は、電力伝送制限信号の出力ステップ（Ｓ００４）の後、予め設定した時間待機するようにする（Ｓ００６）。このような待機時間は、隣接周波数使用機器２０から電力伝送制限信号が出力され、無線電力伝送機１０に受信され、制御部により、無線電力伝送機１０が作動を中断し、電力信号の出力を中断するまでの時間を補償するためのものである。これにより、無線電力伝送機１０から出力された信号と隣接周波数使用機器から出力された信号との間の干渉および衝突を防止することができる。   On the other hand, the adjacent frequency using device 20 waits for a preset time after the output step of the power transmission restriction signal (S004) (S006). In such a standby time, a power transmission restriction signal is output from the adjacent frequency using device 20 and received by the wireless power transmitter 10, and the control unit interrupts the operation of the wireless power transmitter 10 and outputs the power signal. This is to compensate for the time until interruption. Thereby, interference and collision between the signal output from the wireless power transmitter 10 and the signal output from the adjacent frequency using device can be prevented.

隣接周波数使用機器２０は、設定時間待機ステップ（Ｓ００６）で設定された待機時間の後に作動を始め、無線信号を出力する（Ｓ００７）。この時、好ましくは、隣接周波数使用機器２０は、無線電力伝送機１０に出力する電力伝送制限信号を持続的に出力するようにすることが好ましい。   The adjacent frequency using device 20 starts to operate after the standby time set in the set time standby step (S006) and outputs a radio signal (S007). At this time, it is preferable that the adjacent frequency using device 20 continuously outputs the power transmission restriction signal to be output to the wireless power transmitter 10.

隣接周波数使用機器２０の使用が完了して電源がオフになると（Ｓ００８）、隣接周波数使用機器２０からの無線信号出力が中断されるだけでなく、無線電力伝送機１０に出力していた電力伝送制限信号の出力も中断する（Ｓ００９）。従って、無線電力伝送機１０は、持続的に受信していた電力伝送制限信号がなくなることで再び作動を始め（Ｓ０１０）、電力信号を出力し始める（Ｓ０１１）。   When the use of the adjacent frequency using device 20 is completed and the power is turned off (S008), not only the wireless signal output from the adjacent frequency using device 20 is interrupted but also the power transmission output to the wireless power transmitter 10 The output of the limit signal is also interrupted (S009). Accordingly, the wireless power transmitter 10 starts to operate again when the power transmission restriction signal that has been continuously received disappears (S010), and starts to output the power signal (S011).

図３は、本発明の一実施形態による周波数干渉を防止する無線電力伝送方法を示すブロック図である。図３の実施形態は、車両用無線充電器５０とスマートキーユニット６０（ＳＭＫ Ｕｎｉｔ）とを含んでなっている。   FIG. 3 is a block diagram illustrating a wireless power transmission method for preventing frequency interference according to an embodiment of the present invention. The embodiment of FIG. 3 includes a vehicle wireless charger 50 and a smart key unit 60 (SMK Unit).

車両用無線充電器５０が作動中状態においては、車両用無線充電器５０は、第１アンテナを介して電力信号を出力し、この場合、この電力信号が使用する周波数帯域に隣接した周波数を使用するスマートキーユニット６０（例えば、１２５ｋＨｚを使用）のＬＦ信号をサーチ（ｓｅａｒｃｈ）するのに妨害を与えるようになる。そこで、スマートキーユニット６０は、ＬＦ信号をサーチするために車両用無線充電器５０に電力伝送制限信号を出力して、車両用無線充電器５０の作動を一時的に中止するように制御する。車両用無線充電器５０の作動が中止した後に、スマートキーユニット６０は信号の干渉なしに第２アンテナを介してＬＦ信号をサーチすることができる。   When the vehicle wireless charger 50 is in operation, the vehicle wireless charger 50 outputs a power signal via the first antenna, and in this case, a frequency adjacent to the frequency band used by the power signal is used. The smart key unit 60 (for example, using 125 kHz) is disturbed in searching the LF signal. Therefore, the smart key unit 60 outputs a power transmission restriction signal to the vehicle wireless charger 50 in order to search for the LF signal, and controls to temporarily stop the operation of the vehicle wireless charger 50. After the operation of the vehicle wireless charger 50 is stopped, the smart key unit 60 can search for the LF signal via the second antenna without signal interference.

スマートキーユニット６０のＬＦ信号のサーチ作業が終了すると、スマートキーユニット６０は、車両用無線充電器５０への電力伝送制限信号を中止し、車両用無線充電器５０が再び作動するようにする。   When the search operation of the LF signal of the smart key unit 60 is completed, the smart key unit 60 stops the power transmission restriction signal to the vehicle wireless charger 50 and causes the vehicle wireless charger 50 to operate again.

以上、本発明の周波数干渉を防止する無線電力伝送方法の好ましい実施形態を詳細に説明したが、これは、本発明に対する理解を助けるために特定の例を提示したものに過ぎず、本発明の範囲を限定しようとするものではない。ここに開示した実施形態の他に、本発明の技術的思想に基づいた他の変形例も実施可能であるのは、当業者にとって明らかなことである。   The preferred embodiment of the wireless power transmission method for preventing frequency interference of the present invention has been described in detail above, but this is merely a specific example to help understanding of the present invention. It is not intended to limit the scope. It will be apparent to those skilled in the art that other modifications based on the technical idea of the present invention can be implemented in addition to the embodiments disclosed herein.

１０；無線電力伝送機
２０；隣接周波数使用機器
２１；第１隣接周波数使用機器
２２；第２隣接周波数使用機器
３０；信号受信端
４０；信号送信端
５０；車両用無線充電器
６０；スマートキーユニット 10: Wireless power transmitter
20: Equipment using adjacent frequencies
21: Equipment using the first adjacent frequency
22; Second adjacent frequency equipment
30: Signal receiving end
40: Signal transmission end
50; Vehicle wireless charger
60; Smart key unit

Claims (4)

車両に設けられた無線充電器を包括する無線電力伝送機と隣接周波数使用機器を含んで構成され無線周波数干渉を防止するための無線電力伝送方法であって、
車両に設けられた無線充電器により低周波の電力信号を発生するステップと、
車両に設けられた無線充電器により車両に設けられた無線充電器が稼働状態で第１アンテナを通じて電力信号を伝送するステップと。
隣接周波数使用機器により、車両に設けられた無線充電器を一時的に停止するよう電力伝送制御信号を発生させるステップと、
隣接周波数使用機器により、電力伝送制限信号を伝送するステップと、
隣接周波数使用機器により、車両に設けられた無線充電器が一時的に停止している状態で第２アンテナを通じて低周波信号をサーチするステップと、
を含み、
前記隣接周波数使用機器が、スマートキーユニットを含み、
スマートキーユニットのＬＦ信号のサーチ作業が終了すると、スマートキーユニットは、車両に設けられた無線充電器への電力伝送制限信号を中止し、車両に設けられた無線充電器が再び作動するようにすることを特徴とする周波数干渉を防止するための無線電力伝送方法。 A wireless power transmission method for preventing radio frequency interference, comprising a wireless power transmitter including a wireless charger provided in a vehicle and an adjacent frequency using device,
Generating a low-frequency power signal by a wireless charger provided in the vehicle;
Transmitting a power signal through the first antenna when the wireless charger provided in the vehicle is in an operating state by the wireless charger provided in the vehicle;
A step of generating a power transmission control signal to temporarily stop a wireless charger provided in the vehicle by an adjacent frequency using device;
A step of transmitting a power transmission restriction signal by an adjacent frequency using device;
Searching for a low-frequency signal through the second antenna in a state where a wireless charger provided in the vehicle is temporarily stopped by an adjacent frequency using device;
Including
The adjacent frequency using device includes a smart key unit,
When the search operation of the LF signal of the smart key unit is completed, the smart key unit stops the power transmission restriction signal to the wireless charger provided in the vehicle, and the wireless charger provided in the vehicle is activated again. A wireless power transmission method for preventing frequency interference. 無線電力伝送方法は、
低周波信号のサーチが停止している場合に、
車両に設けられた無線充電器を再度作動させるための隣接周波数使用機器による電力伝送制限信号の車両に設けられた無線充電器への伝送中止を、さらに含むことを特徴とする請求項１記載の周波数干渉を防止するための無線電力伝送方法。 The wireless power transmission method is
When the search for the low frequency signal is stopped,
Transmission stop to the wireless charger provided in the vehicle power transmission limiting signal by adjacent frequency used equipment for operating a wireless charger provided in the vehicle again, according to claim 1, further comprising A wireless power transmission method for preventing frequency interference. 電力伝送制限信号の車両に設けられた無線充電器への伝送は、
隣接周波数使用機器が作動している間の隣接周波数使用機器による電力伝送制限信号の一貫した伝送を含み、
これにより隣接周波数使用機器が作動し、車両に設けられた無線充電器の作動が停止することを特徴とする請求項１記載の周波数干渉を防止するための無線電力伝送方法。 The transmission of the power transmission restriction signal to the wireless charger provided in the vehicle is
Including the consistent transmission of the power transmission limit signal by the adjacent frequency equipment while the adjacent frequency equipment is in operation,
Thus the adjacent frequency used equipment is operated, the wireless power transmission method for preventing frequency interference according to claim 1, wherein the operation of the wireless charger provided in the vehicle, characterized in that the stop. 電力伝送制限信号の車両に設けられた無線充電器への伝送は、
電力伝送制限信号を伝送した後の予め設定された時間の後に隣接周波数使用機器が作動することを特徴とする請求項１記載の周波数干渉を防止するための無線電力伝送方法。 The transmission of the power transmission restriction signal to the wireless charger provided in the vehicle is
The wireless power transmission method for preventing frequency interference according to claim 1, wherein the adjacent frequency using equipment after a preset time after transmitting the power transmission limiting signal, characterized in that the operating.
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